Das Klimasystem kann kippen zu Treibhaus Erde. Satz-169 Harald Lesch Feedbacks cascade to "Hot House Earth". PIK #Schellnhuber #Will_Steffen https://www.youtube.com/watch?v=cJjXb6Z7pLM&t=840s
Das Klimasystem kann kippen zu Treibhaus Erde.
Satz-169 Harald Lesch
Feedbacks cascade to "Hot House Earth".
PIK #Schellnhuber #Will_Steffen
www.youtube.com/watch?v=cJjX...
The gain concept at PIK:
-1 = Plank black body
0.4 water vapor gain
0.06 C sinks
0.02 permafrost
0.02 amazon feedback
0.01 bacteria
...
Source: #Will_Steffen 2018
@alevermann.bsky.social
youtube.com/watch?v=1__P...
#Hansen86.4 pipeline
x.com/bratananium/...
The earth’s biosphere evolved in 3 stages
stage#3 the Anthropocene biosphere since 1900.
fact-44
we are commandeering 40% of plants, animals.. NPP
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 13
#Mark_Williams identified,
bsky.app/profile/thom...
The earth’s biosphere evolved in 3 stages stage#2 live in cells since 650 000 000 years fact-43 https://www.researchgate.net/publication/278726759_The_Anthropocene_biosphere https://www.youtube.com/watch?v=HvD0TgE34HA&t=760s #Will_Steffen 2021 minute 13 #Mark_Williams identified https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lc67if6drs2m
The earth’s biosphere evolved in 3 stages
stage#2 live in cells since 650 000 000 years
fact-43
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 13 #Mark_Williams identified
bsky.app/profile/thom...
#Mark_Williams identified, the earth’s biosphere evolved in 3 stages
stage#1 microbial stage from ~3.5 to 0.65 Ga
fact-42
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 12
bsky.app/profile/thom...
One million animal and plant species are now threatened with extinction fact-41 https://www.youtube.com/watch?v=HvD0TgE34HA&t=650s #Will_Steffen: The Anthropocene 2021 https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lc66rxg2gk2m
One million animal and plant species are now threatened with extinction
fact-41
www.youtube.com/watch?v=HvD0...
#Will_Steffen: The Anthropocene 2021
bsky.app/profile/thom...
This rate of CO2 and temperature change is almost unprecedented in the entire history of earth that's 4.5 billion years. fact-40 https://www.youtube.com/watch?v=HvD0TgE34HA&t=540s #Will_Steffen: The Anthropocene 2021 https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lc66kwsjhc2m
This rate of CO2 and temperature change
is almost unprecedented in the entire history of earth that's 4.5 billion years.
fact-40
www.youtube.com/watch?v=HvD0...
#Will_Steffen: The Anthropocene 2021
bsky.app/profile/thom...
The global average temperature is risen at a rate about 170 times faster since 1970.
fact-39
www.youtube.com/watch?v=HvD0...
#Will_Steffen: The Anthropocene 2021
bsky.app/profile/thom...
#Will_Steffen 2021 minute 39
Australians 65 000 years
We are only here for a short amount of time.
To do what we've been put here to do
which is to look after country.
We are only a tool in the cycle of things.
notice that they already knew about cycles not linear
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 28 The Climate Emergency Intervention Time' and Reaction Time'
ice sheet tipping points
will move earth to more warming, even with ZEROe CO2=0.
www.youtube.com/watch?v=HvD0...
We are at this fork -climate is moving.
The other option was: meet the Paris 2015 accord
#Will_Steffen 2021 minute 25 Earth System Trajectories
www.pnas.org/doi/10.1073/...
www.youtube.com/watch?v=HvD0...
#Schellnhuber.1
bsky.app/profile/thom...
#Will_Steffen 2021 minute 24 Earth System Trajectories We are at this fork -climate is moving. Big risk to go to hothouse earth after tipping elements going 6°C warmer, 60m higher sea level https://www.pnas.org/doi/10.1073/pnas.1810141115 https://www.youtube.com/watch?v=HvD0TgE34HA&t=1470s #Schellnhuber.1 https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lbjoeec2m22k
#Will_Steffen 2021 minute 24 Earth System Trajectories
We are at this fork -climate is moving.
Big risk to go to hothouse earth
after tipping elements going
6°C warmer, 60m higher sea level
www.pnas.org/doi/10.1073/...
www.youtube.com/watch?v=HvD0...
#Schellnhuber.1
bsky.app/profile/thom...
#Will_Steffen 2021 minute 24 Earth System Trajectories This little valley is the Holocene (10 000 years ago to 1950). https://www.pnas.org/doi/10.1073/pnas.1810141115 https://www.youtube.com/watch?v=HvD0TgE34HA&t=1425s #Schellnhuber.1 https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lbjoeec2m22k
#Will_Steffen 2021 minute 24 Earth System Trajectories
This little valley is the Holocene (10 000 years ago to 1950).
www.pnas.org/doi/10.1073/...
www.youtube.com/watch?v=HvD0...
#Schellnhuber.1
bsky.app/profile/thom...
#Will_Steffen 2021 minute 24 Earth System Trajectories
This is an ice age -left side in blues.
www.pnas.org/doi/10.1073/...
www.youtube.com/watch?v=HvD0...
#Schellnhuber.1
bsky.app/profile/thom...
#Will_Steffen 2021 minute 23 Tipping elements cascade after 1.5°C. this is indeed an existential threat to civilization no amount of economic cost benefit analysis is going to help us. fact-44 https://www.youtube.com/watch?v=HvD0TgE34HA&t=1380s
#Will_Steffen 2021 minute 23
Tipping elements cascade after 1.5°C.
this is indeed an
existential threat to civilization no amount of economic cost benefit analysis is going to help us.
fact-44
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 20 Projected trajectory of the climate system the problem is once we start tipping them they will push their system on their own up to the higher temperatures we won't be able to stop it so there is a point of no return. https://www.youtube.com/watch?v=HvD0TgE34HA&t=1180s
#Will_Steffen 2021 minute 20
Projected trajectory of the climate system
the problem is once we start tipping
them they will push their system on their own up to the higher temperatures we won't be able to stop it
so there is a point of no return.
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 14 have a look at what happened after 1950. that's that's just phenomenal how much the human enterprise exploded #overpopulation 8.2bn humans #energy #GDP https://www.researchgate.net/publication/278726759_The_Anthropocene_biosphere https://www.youtube.com/watch?v=HvD0TgE34HA&t=840s
#Will_Steffen 2021 minute 14
have a look at what happened after 1950.
that's that's just phenomenal how much the human enterprise exploded
#overpopulation 8.2bn humans.
#energy
#GDP
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021 minute 13 #Mark_Williams identified, the earth’s biosphere evolved in 3 stages stage#3 the Anthropocene biosphere since 1900. fact-44 we are commandeering 40% of plants, animals.. NPP https://www.researchgate.net/publication/278726759_The_Anthropocene_biosphere https://www.youtube.com/watch?v=HvD0TgE34HA&t=780s https://bsky.app/profile/thomas-boettcher.bsky.social/post/3lc67if6drs2m
#Will_Steffen 2021 minute 13
#Mark_Williams identified, the earth’s biosphere evolved in 3 stages
stage#3 the Anthropocene biosphere since 1900.
fact-44
we are commandeering 40% of plants, animals.. NPP
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
bsky.app/profile/thom...
#Will_Steffen 2021 minute 13 #Mark_Williams identified, the earth’s biosphere evolved in 3 stages stage#2 live in cells since 650 000 000 years fact-43 https://www.researchgate.net/publication/278726759_The_Anthropocene_biosphere https://www.youtube.com/watch?v=HvD0TgE34HA&t=720s
#Will_Steffen 2021 minute 13
#Mark_Williams
identified, the earth’s biosphere evolved in 3 stages.
stage#2 live in cells since 650 000 000 years.
fact-43
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen Mark Williams identified, the earth’s biosphere evolved in 3 stages stage#1 microbial stage from ~3.5 to 0.65 Ga fact-42 https://www.researchgate.net/publication/278726759_The_Anthropocene_biosphere https://www.youtube.com/watch?v=HvD0TgE34HA&t=720s
#Will_Steffen 2021 minute 12
#Mark_Williams identified, the earth’s biosphere evolved in 3 stages
stage#1 microbial stage from ~3.5 to 0.65 Ga
fact-42
www.researchgate.net/publication/...
www.youtube.com/watch?v=HvD0...
#Will_Steffen: The Anthropocene 2021 one million animal and plant species are now threatened with extinction fact-41 https://www.youtube.com/watch?v=HvD0TgE34HA&t=660s
#Will_Steffen: The Anthropocene 2021
one million animal and plant species are now threatened with extinction
fact-41
www.youtube.com/watch?v=HvD0...
#Will_Steffen: The Anthropocene 2021
The global average temperature is risen at a rate about 170 times faster since 1970.
fact-39
This rate of CO2 and temperature change
is almost unprecedented in the entire history of earth that's 4.5 billion years.
fact-40
www.youtube.com/watch?v=HvD0...
#Will_Steffen 2021The Anthropocene: Where on Earth are we Going? The Holocene Reference Point period the holocene this is now a hundred thousand years record of earth's temperature so you can see the last ice age (18 000 years ago it was -8C=6°C, holocene is 14°C https://www.youtube.com/watch?v=HvD0TgE34HA&t=102s
#Will_Steffen 2021The Anthropocene: Where on Earth are we Going?
The Holocene Reference Point
period the holocene this is now a hundred thousand years record of earth's temperature so you can see the last ice age (18 000 years ago it was -8C=6°C, holocene is 14°C
www.youtube.com/watch?v=HvD0...
#ST42 #Will_Steffen
#TippingPoint
of circulation like the #jet_stream Texas Spain destabilization of the jet stream that's a tipping point so that's already showing we're approaching that one and then there are the big biome
www.youtube.com/watch?v=HvD0...
#9J7.3
bsky.app/profile/thom...
#9J7.3 #Will_Steffen #TippingPoint of circulation like the #jet_stream Texas was hammered by snow this is a destabilization of the jet stream that's a tipping point so that's already showing we're approaching that one and then there are the big biome https://www.youtube.com/watch?v=HvD0TgE34HA&t=1225s
#9J7.3 #Will_Steffen
#TippingPoint
of circulation like the #jet_stream Texas was hammered by snow this is a destabilization of the jet stream that's a tipping point so that's already showing we're approaching that one and then there are the big biome
www.youtube.com/watch?v=HvD0...
#Schellnhuber.10
@jumpsteady.bsky.social
Wenn diese Kippelemente zusammenwirken und Kaskaden entstehen, dann könnte sich die Erwärmung bei 2° verselbstständigen.
x.com/Jumpsteady/s...
#Will_Steffen 4°C ends civilization
x.com/Jumpsteady/s...
two choices
4°C...10°C climate hell like 15.000.000 years ago:
60 meters higher sea level.
or
2.5°C Paris 2015
same as 3.000.000 years ago 10 m sea level.
Only two earth states are possible.
Satz-107e
#Will_Steffen
#Schellnhuber.1.4
www.youtube.com/watch?v=OzQs...
bsky.app/profile/thom...
#Will_Steffen
#Schellnhuber.1.4 two choices
4°C...10°C climate hell like 15.000.000 years ago: 60 meters higher sea level.
or
2.5°C Paris 2015
same as 3.000.000 years ago 10 meters higher sea level.
Only two earth states are possible.
www.youtube.com/watch?v=OzQs...
twitter.com/bratananium/...
